Portion of a tire tread pattern



FIG. 1 is a perspective view of a portion of a tire tread pattern of ournew design; and,

FIG. 2 is a perspective view from the opposite side thereof.

The broken line showings of the remainder of the tire are forillustrative purposes only and form no part of the claimed invention.

The ornamental design for a portion of a tire tread pattern, as shownand described.